MSE-Based Transceiver Designs for RIS-Aided Communications With Hardware Impairments

08/16/2022
by   Jingwen Zhao, et al.
0

It is challenging to precisely configure the phase shifts of the reflecting elements at the reconfigurable intelligent surface (RIS) due to inherent hardware impairments (HIs). In this paper, the mean square error (MSE) performance is investigated in an RIS-aided single-user multiple-input multipleoutput (MIMO) communication system with transceiver HIs and RIS phase noise. We aim to jointly optimize the transmit precoder, linear received equalizer, and RIS reflecting matrices to minimize the MSE. To tackle this problem, an iterative algorithm is proposed, wherein the beamforming matrices are alternately optimized. Specifically, for the beamforming optimization subproblem, we derive the closed-form expression of the optimal precoder and equalizer matrices. Then, for the phase shift optimization subproblem, an efficient algorithm based on the majorization-minimization (MM) method is proposed. Simulation results show that the proposed MSE-based RIS-aided transceiver scheme dramatically outperforms the conventional system algorithms that do not consider HIs at both the transceiver and the RIS.

READ FULL TEXT

page 1

page 2

page 3

page 4

research
09/23/2022

RIS-Aided MIMO Systems with Hardware Impairments: Robust Beamforming Design and Analysis

Reconfigurable intelligent surface (RIS) has been anticipated to be a no...
research
03/01/2021

Active Reconfigurable Intelligent Surface Aided Wireless Communications

Reconfigurable Intelligent Surface (RIS) is a promising solution to reco...
research
06/12/2020

Robust Design for Intelligent Reflecting Surfaces Assisted MISO Systems

In this work, we study the statistically robust beamforming design for a...
research
11/28/2021

Throughput Maximization for IRS-Aided MIMO FD-WPCN with Non-Linear EH Model

This paper studies an intelligent reflecting surface (IRS)-aided multipl...
research
07/27/2021

Cooperative Reflection Design with Timing Offsets in Distributed Multi-RIS Communications

This letter investigates a wireless communication system deploying distr...
research
05/26/2016

Towards optimal nonlinearities for sparse recovery using higher-order statistics

We consider machine learning techniques to develop low-latency approxima...
research
03/17/2020

A Single-RF Architecture for Multiuser Massive MIMO via Reflecting Surfaces

In this work, we propose a new single-RF MIMO architecture which enjoys ...

Please sign up or login with your details

Forgot password? Click here to reset